1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl> */ |
3 | |
4 | #include <linux/err.h> |
5 | #include <linux/io.h> |
6 | #include <linux/mod_devicetable.h> |
7 | #include <linux/module.h> |
8 | #include <linux/pinctrl/pinconf-generic.h> |
9 | #include <linux/pinctrl/pinctrl.h> |
10 | #include <linux/pinctrl/pinmux.h> |
11 | #include <linux/platform_device.h> |
12 | #include <linux/slab.h> |
13 | #include <linux/string_helpers.h> |
14 | |
15 | #include "../core.h" |
16 | #include "../pinmux.h" |
17 | |
18 | #define BCM4908_NUM_PINS 86 |
19 | |
20 | #define BCM4908_TEST_PORT_BLOCK_EN_LSB 0x00 |
21 | #define BCM4908_TEST_PORT_BLOCK_DATA_MSB 0x04 |
22 | #define BCM4908_TEST_PORT_BLOCK_DATA_LSB 0x08 |
23 | #define BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT 12 |
24 | #define BCM4908_TEST_PORT_COMMAND 0x0c |
25 | #define BCM4908_TEST_PORT_CMD_LOAD_MUX_REG 0x00000021 |
26 | |
27 | struct bcm4908_pinctrl { |
28 | struct device *dev; |
29 | void __iomem *base; |
30 | struct mutex mutex; |
31 | struct pinctrl_dev *pctldev; |
32 | struct pinctrl_desc pctldesc; |
33 | }; |
34 | |
35 | /* |
36 | * Groups |
37 | */ |
38 | |
39 | struct bcm4908_pinctrl_pin_setup { |
40 | unsigned int number; |
41 | unsigned int function; |
42 | }; |
43 | |
44 | static const struct bcm4908_pinctrl_pin_setup led_0_pins_a[] = { |
45 | { 0, 3 }, |
46 | }; |
47 | |
48 | static const struct bcm4908_pinctrl_pin_setup led_1_pins_a[] = { |
49 | { 1, 3 }, |
50 | }; |
51 | |
52 | static const struct bcm4908_pinctrl_pin_setup led_2_pins_a[] = { |
53 | { 2, 3 }, |
54 | }; |
55 | |
56 | static const struct bcm4908_pinctrl_pin_setup led_3_pins_a[] = { |
57 | { 3, 3 }, |
58 | }; |
59 | |
60 | static const struct bcm4908_pinctrl_pin_setup led_4_pins_a[] = { |
61 | { 4, 3 }, |
62 | }; |
63 | |
64 | static const struct bcm4908_pinctrl_pin_setup led_5_pins_a[] = { |
65 | { 5, 3 }, |
66 | }; |
67 | |
68 | static const struct bcm4908_pinctrl_pin_setup led_6_pins_a[] = { |
69 | { 6, 3 }, |
70 | }; |
71 | |
72 | static const struct bcm4908_pinctrl_pin_setup led_7_pins_a[] = { |
73 | { 7, 3 }, |
74 | }; |
75 | |
76 | static const struct bcm4908_pinctrl_pin_setup led_8_pins_a[] = { |
77 | { 8, 3 }, |
78 | }; |
79 | |
80 | static const struct bcm4908_pinctrl_pin_setup led_9_pins_a[] = { |
81 | { 9, 3 }, |
82 | }; |
83 | |
84 | static const struct bcm4908_pinctrl_pin_setup led_10_pins_a[] = { |
85 | { 10, 3 }, |
86 | }; |
87 | |
88 | static const struct bcm4908_pinctrl_pin_setup led_11_pins_a[] = { |
89 | { 11, 3 }, |
90 | }; |
91 | |
92 | static const struct bcm4908_pinctrl_pin_setup led_12_pins_a[] = { |
93 | { 12, 3 }, |
94 | }; |
95 | |
96 | static const struct bcm4908_pinctrl_pin_setup led_13_pins_a[] = { |
97 | { 13, 3 }, |
98 | }; |
99 | |
100 | static const struct bcm4908_pinctrl_pin_setup led_14_pins_a[] = { |
101 | { 14, 3 }, |
102 | }; |
103 | |
104 | static const struct bcm4908_pinctrl_pin_setup led_15_pins_a[] = { |
105 | { 15, 3 }, |
106 | }; |
107 | |
108 | static const struct bcm4908_pinctrl_pin_setup led_16_pins_a[] = { |
109 | { 16, 3 }, |
110 | }; |
111 | |
112 | static const struct bcm4908_pinctrl_pin_setup led_17_pins_a[] = { |
113 | { 17, 3 }, |
114 | }; |
115 | |
116 | static const struct bcm4908_pinctrl_pin_setup led_18_pins_a[] = { |
117 | { 18, 3 }, |
118 | }; |
119 | |
120 | static const struct bcm4908_pinctrl_pin_setup led_19_pins_a[] = { |
121 | { 19, 3 }, |
122 | }; |
123 | |
124 | static const struct bcm4908_pinctrl_pin_setup led_20_pins_a[] = { |
125 | { 20, 3 }, |
126 | }; |
127 | |
128 | static const struct bcm4908_pinctrl_pin_setup led_21_pins_a[] = { |
129 | { 21, 3 }, |
130 | }; |
131 | |
132 | static const struct bcm4908_pinctrl_pin_setup led_22_pins_a[] = { |
133 | { 22, 3 }, |
134 | }; |
135 | |
136 | static const struct bcm4908_pinctrl_pin_setup led_23_pins_a[] = { |
137 | { 23, 3 }, |
138 | }; |
139 | |
140 | static const struct bcm4908_pinctrl_pin_setup led_24_pins_a[] = { |
141 | { 24, 3 }, |
142 | }; |
143 | |
144 | static const struct bcm4908_pinctrl_pin_setup led_25_pins_a[] = { |
145 | { 25, 3 }, |
146 | }; |
147 | |
148 | static const struct bcm4908_pinctrl_pin_setup led_26_pins_a[] = { |
149 | { 26, 3 }, |
150 | }; |
151 | |
152 | static const struct bcm4908_pinctrl_pin_setup led_27_pins_a[] = { |
153 | { 27, 3 }, |
154 | }; |
155 | |
156 | static const struct bcm4908_pinctrl_pin_setup led_28_pins_a[] = { |
157 | { 28, 3 }, |
158 | }; |
159 | |
160 | static const struct bcm4908_pinctrl_pin_setup led_29_pins_a[] = { |
161 | { 29, 3 }, |
162 | }; |
163 | |
164 | static const struct bcm4908_pinctrl_pin_setup led_30_pins_a[] = { |
165 | { 30, 3 }, |
166 | }; |
167 | |
168 | static const struct bcm4908_pinctrl_pin_setup led_31_pins_a[] = { |
169 | { 31, 3 }, |
170 | }; |
171 | |
172 | static const struct bcm4908_pinctrl_pin_setup led_10_pins_b[] = { |
173 | { 8, 2 }, |
174 | }; |
175 | |
176 | static const struct bcm4908_pinctrl_pin_setup led_11_pins_b[] = { |
177 | { 9, 2 }, |
178 | }; |
179 | |
180 | static const struct bcm4908_pinctrl_pin_setup led_12_pins_b[] = { |
181 | { 0, 2 }, |
182 | }; |
183 | |
184 | static const struct bcm4908_pinctrl_pin_setup led_13_pins_b[] = { |
185 | { 1, 2 }, |
186 | }; |
187 | |
188 | static const struct bcm4908_pinctrl_pin_setup led_31_pins_b[] = { |
189 | { 30, 2 }, |
190 | }; |
191 | |
192 | static const struct bcm4908_pinctrl_pin_setup hs_uart_pins[] = { |
193 | { 10, 0 }, /* CTS */ |
194 | { 11, 0 }, /* RTS */ |
195 | { 12, 0 }, /* RXD */ |
196 | { 13, 0 }, /* TXD */ |
197 | }; |
198 | |
199 | static const struct bcm4908_pinctrl_pin_setup i2c_pins_a[] = { |
200 | { 18, 0 }, /* SDA */ |
201 | { 19, 0 }, /* SCL */ |
202 | }; |
203 | |
204 | static const struct bcm4908_pinctrl_pin_setup i2c_pins_b[] = { |
205 | { 22, 0 }, /* SDA */ |
206 | { 23, 0 }, /* SCL */ |
207 | }; |
208 | |
209 | static const struct bcm4908_pinctrl_pin_setup i2s_pins[] = { |
210 | { 27, 0 }, /* MCLK */ |
211 | { 28, 0 }, /* LRCK */ |
212 | { 29, 0 }, /* SDATA */ |
213 | { 30, 0 }, /* SCLK */ |
214 | }; |
215 | |
216 | static const struct bcm4908_pinctrl_pin_setup nand_ctrl_pins[] = { |
217 | { 32, 0 }, |
218 | { 33, 0 }, |
219 | { 34, 0 }, |
220 | { 43, 0 }, |
221 | { 44, 0 }, |
222 | { 45, 0 }, |
223 | { 56, 1 }, |
224 | }; |
225 | |
226 | static const struct bcm4908_pinctrl_pin_setup nand_data_pins[] = { |
227 | { 35, 0 }, |
228 | { 36, 0 }, |
229 | { 37, 0 }, |
230 | { 38, 0 }, |
231 | { 39, 0 }, |
232 | { 40, 0 }, |
233 | { 41, 0 }, |
234 | { 42, 0 }, |
235 | }; |
236 | |
237 | static const struct bcm4908_pinctrl_pin_setup emmc_ctrl_pins[] = { |
238 | { 46, 0 }, |
239 | { 47, 0 }, |
240 | }; |
241 | |
242 | static const struct bcm4908_pinctrl_pin_setup usb0_pwr_pins[] = { |
243 | { 63, 0 }, |
244 | { 64, 0 }, |
245 | }; |
246 | |
247 | static const struct bcm4908_pinctrl_pin_setup usb1_pwr_pins[] = { |
248 | { 66, 0 }, |
249 | { 67, 0 }, |
250 | }; |
251 | |
252 | struct bcm4908_pinctrl_grp { |
253 | const char *name; |
254 | const struct bcm4908_pinctrl_pin_setup *pins; |
255 | const unsigned int num_pins; |
256 | }; |
257 | |
258 | static const struct bcm4908_pinctrl_grp bcm4908_pinctrl_grps[] = { |
259 | { "led_0_grp_a" , led_0_pins_a, ARRAY_SIZE(led_0_pins_a) }, |
260 | { "led_1_grp_a" , led_1_pins_a, ARRAY_SIZE(led_1_pins_a) }, |
261 | { "led_2_grp_a" , led_2_pins_a, ARRAY_SIZE(led_2_pins_a) }, |
262 | { "led_3_grp_a" , led_3_pins_a, ARRAY_SIZE(led_3_pins_a) }, |
263 | { "led_4_grp_a" , led_4_pins_a, ARRAY_SIZE(led_4_pins_a) }, |
264 | { "led_5_grp_a" , led_5_pins_a, ARRAY_SIZE(led_5_pins_a) }, |
265 | { "led_6_grp_a" , led_6_pins_a, ARRAY_SIZE(led_6_pins_a) }, |
266 | { "led_7_grp_a" , led_7_pins_a, ARRAY_SIZE(led_7_pins_a) }, |
267 | { "led_8_grp_a" , led_8_pins_a, ARRAY_SIZE(led_8_pins_a) }, |
268 | { "led_9_grp_a" , led_9_pins_a, ARRAY_SIZE(led_9_pins_a) }, |
269 | { "led_10_grp_a" , led_10_pins_a, ARRAY_SIZE(led_10_pins_a) }, |
270 | { "led_11_grp_a" , led_11_pins_a, ARRAY_SIZE(led_11_pins_a) }, |
271 | { "led_12_grp_a" , led_12_pins_a, ARRAY_SIZE(led_12_pins_a) }, |
272 | { "led_13_grp_a" , led_13_pins_a, ARRAY_SIZE(led_13_pins_a) }, |
273 | { "led_14_grp_a" , led_14_pins_a, ARRAY_SIZE(led_14_pins_a) }, |
274 | { "led_15_grp_a" , led_15_pins_a, ARRAY_SIZE(led_15_pins_a) }, |
275 | { "led_16_grp_a" , led_16_pins_a, ARRAY_SIZE(led_16_pins_a) }, |
276 | { "led_17_grp_a" , led_17_pins_a, ARRAY_SIZE(led_17_pins_a) }, |
277 | { "led_18_grp_a" , led_18_pins_a, ARRAY_SIZE(led_18_pins_a) }, |
278 | { "led_19_grp_a" , led_19_pins_a, ARRAY_SIZE(led_19_pins_a) }, |
279 | { "led_20_grp_a" , led_20_pins_a, ARRAY_SIZE(led_20_pins_a) }, |
280 | { "led_21_grp_a" , led_21_pins_a, ARRAY_SIZE(led_21_pins_a) }, |
281 | { "led_22_grp_a" , led_22_pins_a, ARRAY_SIZE(led_22_pins_a) }, |
282 | { "led_23_grp_a" , led_23_pins_a, ARRAY_SIZE(led_23_pins_a) }, |
283 | { "led_24_grp_a" , led_24_pins_a, ARRAY_SIZE(led_24_pins_a) }, |
284 | { "led_25_grp_a" , led_25_pins_a, ARRAY_SIZE(led_25_pins_a) }, |
285 | { "led_26_grp_a" , led_26_pins_a, ARRAY_SIZE(led_26_pins_a) }, |
286 | { "led_27_grp_a" , led_27_pins_a, ARRAY_SIZE(led_27_pins_a) }, |
287 | { "led_28_grp_a" , led_28_pins_a, ARRAY_SIZE(led_28_pins_a) }, |
288 | { "led_29_grp_a" , led_29_pins_a, ARRAY_SIZE(led_29_pins_a) }, |
289 | { "led_30_grp_a" , led_30_pins_a, ARRAY_SIZE(led_30_pins_a) }, |
290 | { "led_31_grp_a" , led_31_pins_a, ARRAY_SIZE(led_31_pins_a) }, |
291 | { "led_10_grp_b" , led_10_pins_b, ARRAY_SIZE(led_10_pins_b) }, |
292 | { "led_11_grp_b" , led_11_pins_b, ARRAY_SIZE(led_11_pins_b) }, |
293 | { "led_12_grp_b" , led_12_pins_b, ARRAY_SIZE(led_12_pins_b) }, |
294 | { "led_13_grp_b" , led_13_pins_b, ARRAY_SIZE(led_13_pins_b) }, |
295 | { "led_31_grp_b" , led_31_pins_b, ARRAY_SIZE(led_31_pins_b) }, |
296 | { "hs_uart_grp" , hs_uart_pins, ARRAY_SIZE(hs_uart_pins) }, |
297 | { "i2c_grp_a" , i2c_pins_a, ARRAY_SIZE(i2c_pins_a) }, |
298 | { "i2c_grp_b" , i2c_pins_b, ARRAY_SIZE(i2c_pins_b) }, |
299 | { "i2s_grp" , i2s_pins, ARRAY_SIZE(i2s_pins) }, |
300 | { "nand_ctrl_grp" , nand_ctrl_pins, ARRAY_SIZE(nand_ctrl_pins) }, |
301 | { "nand_data_grp" , nand_data_pins, ARRAY_SIZE(nand_data_pins) }, |
302 | { "emmc_ctrl_grp" , emmc_ctrl_pins, ARRAY_SIZE(emmc_ctrl_pins) }, |
303 | { "usb0_pwr_grp" , usb0_pwr_pins, ARRAY_SIZE(usb0_pwr_pins) }, |
304 | { "usb1_pwr_grp" , usb1_pwr_pins, ARRAY_SIZE(usb1_pwr_pins) }, |
305 | }; |
306 | |
307 | /* |
308 | * Functions |
309 | */ |
310 | |
311 | struct bcm4908_pinctrl_function { |
312 | const char *name; |
313 | const char * const *groups; |
314 | const unsigned int num_groups; |
315 | }; |
316 | |
317 | static const char * const led_0_groups[] = { "led_0_grp_a" }; |
318 | static const char * const led_1_groups[] = { "led_1_grp_a" }; |
319 | static const char * const led_2_groups[] = { "led_2_grp_a" }; |
320 | static const char * const led_3_groups[] = { "led_3_grp_a" }; |
321 | static const char * const led_4_groups[] = { "led_4_grp_a" }; |
322 | static const char * const led_5_groups[] = { "led_5_grp_a" }; |
323 | static const char * const led_6_groups[] = { "led_6_grp_a" }; |
324 | static const char * const led_7_groups[] = { "led_7_grp_a" }; |
325 | static const char * const led_8_groups[] = { "led_8_grp_a" }; |
326 | static const char * const led_9_groups[] = { "led_9_grp_a" }; |
327 | static const char * const led_10_groups[] = { "led_10_grp_a" , "led_10_grp_b" }; |
328 | static const char * const led_11_groups[] = { "led_11_grp_a" , "led_11_grp_b" }; |
329 | static const char * const led_12_groups[] = { "led_12_grp_a" , "led_12_grp_b" }; |
330 | static const char * const led_13_groups[] = { "led_13_grp_a" , "led_13_grp_b" }; |
331 | static const char * const led_14_groups[] = { "led_14_grp_a" }; |
332 | static const char * const led_15_groups[] = { "led_15_grp_a" }; |
333 | static const char * const led_16_groups[] = { "led_16_grp_a" }; |
334 | static const char * const led_17_groups[] = { "led_17_grp_a" }; |
335 | static const char * const led_18_groups[] = { "led_18_grp_a" }; |
336 | static const char * const led_19_groups[] = { "led_19_grp_a" }; |
337 | static const char * const led_20_groups[] = { "led_20_grp_a" }; |
338 | static const char * const led_21_groups[] = { "led_21_grp_a" }; |
339 | static const char * const led_22_groups[] = { "led_22_grp_a" }; |
340 | static const char * const led_23_groups[] = { "led_23_grp_a" }; |
341 | static const char * const led_24_groups[] = { "led_24_grp_a" }; |
342 | static const char * const led_25_groups[] = { "led_25_grp_a" }; |
343 | static const char * const led_26_groups[] = { "led_26_grp_a" }; |
344 | static const char * const led_27_groups[] = { "led_27_grp_a" }; |
345 | static const char * const led_28_groups[] = { "led_28_grp_a" }; |
346 | static const char * const led_29_groups[] = { "led_29_grp_a" }; |
347 | static const char * const led_30_groups[] = { "led_30_grp_a" }; |
348 | static const char * const led_31_groups[] = { "led_31_grp_a" , "led_31_grp_b" }; |
349 | static const char * const hs_uart_groups[] = { "hs_uart_grp" }; |
350 | static const char * const i2c_groups[] = { "i2c_grp_a" , "i2c_grp_b" }; |
351 | static const char * const i2s_groups[] = { "i2s_grp" }; |
352 | static const char * const nand_ctrl_groups[] = { "nand_ctrl_grp" }; |
353 | static const char * const nand_data_groups[] = { "nand_data_grp" }; |
354 | static const char * const emmc_ctrl_groups[] = { "emmc_ctrl_grp" }; |
355 | static const char * const usb0_pwr_groups[] = { "usb0_pwr_grp" }; |
356 | static const char * const usb1_pwr_groups[] = { "usb1_pwr_grp" }; |
357 | |
358 | static const struct bcm4908_pinctrl_function bcm4908_pinctrl_functions[] = { |
359 | { "led_0" , led_0_groups, ARRAY_SIZE(led_0_groups) }, |
360 | { "led_1" , led_1_groups, ARRAY_SIZE(led_1_groups) }, |
361 | { "led_2" , led_2_groups, ARRAY_SIZE(led_2_groups) }, |
362 | { "led_3" , led_3_groups, ARRAY_SIZE(led_3_groups) }, |
363 | { "led_4" , led_4_groups, ARRAY_SIZE(led_4_groups) }, |
364 | { "led_5" , led_5_groups, ARRAY_SIZE(led_5_groups) }, |
365 | { "led_6" , led_6_groups, ARRAY_SIZE(led_6_groups) }, |
366 | { "led_7" , led_7_groups, ARRAY_SIZE(led_7_groups) }, |
367 | { "led_8" , led_8_groups, ARRAY_SIZE(led_8_groups) }, |
368 | { "led_9" , led_9_groups, ARRAY_SIZE(led_9_groups) }, |
369 | { "led_10" , led_10_groups, ARRAY_SIZE(led_10_groups) }, |
370 | { "led_11" , led_11_groups, ARRAY_SIZE(led_11_groups) }, |
371 | { "led_12" , led_12_groups, ARRAY_SIZE(led_12_groups) }, |
372 | { "led_13" , led_13_groups, ARRAY_SIZE(led_13_groups) }, |
373 | { "led_14" , led_14_groups, ARRAY_SIZE(led_14_groups) }, |
374 | { "led_15" , led_15_groups, ARRAY_SIZE(led_15_groups) }, |
375 | { "led_16" , led_16_groups, ARRAY_SIZE(led_16_groups) }, |
376 | { "led_17" , led_17_groups, ARRAY_SIZE(led_17_groups) }, |
377 | { "led_18" , led_18_groups, ARRAY_SIZE(led_18_groups) }, |
378 | { "led_19" , led_19_groups, ARRAY_SIZE(led_19_groups) }, |
379 | { "led_20" , led_20_groups, ARRAY_SIZE(led_20_groups) }, |
380 | { "led_21" , led_21_groups, ARRAY_SIZE(led_21_groups) }, |
381 | { "led_22" , led_22_groups, ARRAY_SIZE(led_22_groups) }, |
382 | { "led_23" , led_23_groups, ARRAY_SIZE(led_23_groups) }, |
383 | { "led_24" , led_24_groups, ARRAY_SIZE(led_24_groups) }, |
384 | { "led_25" , led_25_groups, ARRAY_SIZE(led_25_groups) }, |
385 | { "led_26" , led_26_groups, ARRAY_SIZE(led_26_groups) }, |
386 | { "led_27" , led_27_groups, ARRAY_SIZE(led_27_groups) }, |
387 | { "led_28" , led_28_groups, ARRAY_SIZE(led_28_groups) }, |
388 | { "led_29" , led_29_groups, ARRAY_SIZE(led_29_groups) }, |
389 | { "led_30" , led_30_groups, ARRAY_SIZE(led_30_groups) }, |
390 | { "led_31" , led_31_groups, ARRAY_SIZE(led_31_groups) }, |
391 | { "hs_uart" , hs_uart_groups, ARRAY_SIZE(hs_uart_groups) }, |
392 | { "i2c" , i2c_groups, ARRAY_SIZE(i2c_groups) }, |
393 | { "i2s" , i2s_groups, ARRAY_SIZE(i2s_groups) }, |
394 | { "nand_ctrl" , nand_ctrl_groups, ARRAY_SIZE(nand_ctrl_groups) }, |
395 | { "nand_data" , nand_data_groups, ARRAY_SIZE(nand_data_groups) }, |
396 | { "emmc_ctrl" , emmc_ctrl_groups, ARRAY_SIZE(emmc_ctrl_groups) }, |
397 | { "usb0_pwr" , usb0_pwr_groups, ARRAY_SIZE(usb0_pwr_groups) }, |
398 | { "usb1_pwr" , usb1_pwr_groups, ARRAY_SIZE(usb1_pwr_groups) }, |
399 | }; |
400 | |
401 | /* |
402 | * Groups code |
403 | */ |
404 | |
405 | static const struct pinctrl_ops bcm4908_pinctrl_ops = { |
406 | .get_groups_count = pinctrl_generic_get_group_count, |
407 | .get_group_name = pinctrl_generic_get_group_name, |
408 | .get_group_pins = pinctrl_generic_get_group_pins, |
409 | .dt_node_to_map = pinconf_generic_dt_node_to_map_group, |
410 | .dt_free_map = pinconf_generic_dt_free_map, |
411 | }; |
412 | |
413 | /* |
414 | * Functions code |
415 | */ |
416 | |
417 | static int bcm4908_pinctrl_set_mux(struct pinctrl_dev *pctrl_dev, |
418 | unsigned int func_selector, |
419 | unsigned int group_selector) |
420 | { |
421 | struct bcm4908_pinctrl *bcm4908_pinctrl = pinctrl_dev_get_drvdata(pctldev: pctrl_dev); |
422 | const struct bcm4908_pinctrl_grp *group; |
423 | struct group_desc *group_desc; |
424 | int i; |
425 | |
426 | group_desc = pinctrl_generic_get_group(pctldev: pctrl_dev, group_selector); |
427 | if (!group_desc) |
428 | return -EINVAL; |
429 | group = group_desc->data; |
430 | |
431 | mutex_lock(&bcm4908_pinctrl->mutex); |
432 | for (i = 0; i < group->num_pins; i++) { |
433 | u32 lsb = 0; |
434 | |
435 | lsb |= group->pins[i].number; |
436 | lsb |= group->pins[i].function << BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT; |
437 | |
438 | writel(val: 0x0, addr: bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_MSB); |
439 | writel(val: lsb, addr: bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_LSB); |
440 | writel(BCM4908_TEST_PORT_CMD_LOAD_MUX_REG, |
441 | addr: bcm4908_pinctrl->base + BCM4908_TEST_PORT_COMMAND); |
442 | } |
443 | mutex_unlock(lock: &bcm4908_pinctrl->mutex); |
444 | |
445 | return 0; |
446 | } |
447 | |
448 | static const struct pinmux_ops bcm4908_pinctrl_pmxops = { |
449 | .get_functions_count = pinmux_generic_get_function_count, |
450 | .get_function_name = pinmux_generic_get_function_name, |
451 | .get_function_groups = pinmux_generic_get_function_groups, |
452 | .set_mux = bcm4908_pinctrl_set_mux, |
453 | }; |
454 | |
455 | /* |
456 | * Controller code |
457 | */ |
458 | |
459 | static struct pinctrl_desc bcm4908_pinctrl_desc = { |
460 | .name = "bcm4908-pinctrl" , |
461 | .pctlops = &bcm4908_pinctrl_ops, |
462 | .pmxops = &bcm4908_pinctrl_pmxops, |
463 | }; |
464 | |
465 | static const struct of_device_id bcm4908_pinctrl_of_match_table[] = { |
466 | { .compatible = "brcm,bcm4908-pinctrl" , }, |
467 | { } |
468 | }; |
469 | |
470 | static int bcm4908_pinctrl_probe(struct platform_device *pdev) |
471 | { |
472 | struct device *dev = &pdev->dev; |
473 | struct bcm4908_pinctrl *bcm4908_pinctrl; |
474 | struct pinctrl_desc *pctldesc; |
475 | struct pinctrl_pin_desc *pins; |
476 | char **pin_names; |
477 | int i; |
478 | |
479 | bcm4908_pinctrl = devm_kzalloc(dev, size: sizeof(*bcm4908_pinctrl), GFP_KERNEL); |
480 | if (!bcm4908_pinctrl) |
481 | return -ENOMEM; |
482 | pctldesc = &bcm4908_pinctrl->pctldesc; |
483 | platform_set_drvdata(pdev, data: bcm4908_pinctrl); |
484 | |
485 | /* Set basic properties */ |
486 | |
487 | bcm4908_pinctrl->dev = dev; |
488 | |
489 | bcm4908_pinctrl->base = devm_platform_ioremap_resource(pdev, index: 0); |
490 | if (IS_ERR(ptr: bcm4908_pinctrl->base)) |
491 | return PTR_ERR(ptr: bcm4908_pinctrl->base); |
492 | |
493 | mutex_init(&bcm4908_pinctrl->mutex); |
494 | |
495 | memcpy(pctldesc, &bcm4908_pinctrl_desc, sizeof(*pctldesc)); |
496 | |
497 | /* Set pinctrl properties */ |
498 | |
499 | pin_names = devm_kasprintf_strarray(dev, prefix: "pin" , BCM4908_NUM_PINS); |
500 | if (IS_ERR(ptr: pin_names)) |
501 | return PTR_ERR(ptr: pin_names); |
502 | |
503 | pins = devm_kcalloc(dev, BCM4908_NUM_PINS, size: sizeof(*pins), GFP_KERNEL); |
504 | if (!pins) |
505 | return -ENOMEM; |
506 | for (i = 0; i < BCM4908_NUM_PINS; i++) { |
507 | pins[i].number = i; |
508 | pins[i].name = pin_names[i]; |
509 | } |
510 | pctldesc->pins = pins; |
511 | pctldesc->npins = BCM4908_NUM_PINS; |
512 | |
513 | /* Register */ |
514 | |
515 | bcm4908_pinctrl->pctldev = devm_pinctrl_register(dev, pctldesc, driver_data: bcm4908_pinctrl); |
516 | if (IS_ERR(ptr: bcm4908_pinctrl->pctldev)) |
517 | return dev_err_probe(dev, err: PTR_ERR(ptr: bcm4908_pinctrl->pctldev), |
518 | fmt: "Failed to register pinctrl\n" ); |
519 | |
520 | /* Groups */ |
521 | |
522 | for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_grps); i++) { |
523 | const struct bcm4908_pinctrl_grp *group = &bcm4908_pinctrl_grps[i]; |
524 | int *pins; |
525 | int j; |
526 | |
527 | pins = devm_kcalloc(dev, n: group->num_pins, size: sizeof(*pins), GFP_KERNEL); |
528 | if (!pins) |
529 | return -ENOMEM; |
530 | for (j = 0; j < group->num_pins; j++) |
531 | pins[j] = group->pins[j].number; |
532 | |
533 | pinctrl_generic_add_group(pctldev: bcm4908_pinctrl->pctldev, name: group->name, |
534 | pins, num_pins: group->num_pins, data: (void *)group); |
535 | } |
536 | |
537 | /* Functions */ |
538 | |
539 | for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_functions); i++) { |
540 | const struct bcm4908_pinctrl_function *function = &bcm4908_pinctrl_functions[i]; |
541 | |
542 | pinmux_generic_add_function(pctldev: bcm4908_pinctrl->pctldev, |
543 | name: function->name, |
544 | groups: function->groups, |
545 | num_groups: function->num_groups, NULL); |
546 | } |
547 | |
548 | return 0; |
549 | } |
550 | |
551 | static struct platform_driver bcm4908_pinctrl_driver = { |
552 | .probe = bcm4908_pinctrl_probe, |
553 | .driver = { |
554 | .name = "bcm4908-pinctrl" , |
555 | .of_match_table = bcm4908_pinctrl_of_match_table, |
556 | }, |
557 | }; |
558 | |
559 | module_platform_driver(bcm4908_pinctrl_driver); |
560 | |
561 | MODULE_AUTHOR("Rafał Miłecki" ); |
562 | MODULE_LICENSE("GPL v2" ); |
563 | MODULE_DEVICE_TABLE(of, bcm4908_pinctrl_of_match_table); |
564 | |